Sawing and mitering machine.



W J; DYER. SAWING AND MITERING MACHINE. APPLICATION FILED JAIL B1, 1909.

963,697. Patented J y 1910] v 1'": NORRIS PETERS 50., wAsNlNaroN. c.

JOSEPH DYER, OF FAIRFIELD, MAINE.

SAWING- AND MITERING MACHINE.

To all whom it may concern:

Be it known that I, J OSEPH DYER, of Fairfield, in the county of Somerset, State of Maine, have invented certain new and useful Improvements in Sawing and Mitering Machines, of which the following is a specification.

My invention relates to a combined saw ing and mitering machine such as are used in the manufacture of window screens and the like from wood and the object of the invention is to construct a machine of this character which may be used for a great variety of work and which may be quickly and easily adjusted.

The invention consists of the combination and arrangement of parts as hereinafter set forth and claimed.

I illustrate my invention by means of the accompanying drawing in which- Figure 1 is a front elevation of the machine with parts shown in section, Fig. 2 is a side view of same, Fig. 3 is a section on w 00 of Fig. 4:. Fig. 4 is a detail elevation showing cam for raising thetable, Fig. 5 is a partial plan. Fig. 6 is a plan and section, showing a gage for plan work. Fig. 7 is a detail section showing the means for supporting the work, and Fig. 8 is an elevation of the part shown in Fig. 6 with the table shown in section.

In the drawing, A represents a suitable frame on the top of which is hinged a table B by means of hinges 6 The forward end of the table is raised and lowered by means of two arms 7' secured to the ends of a horizontal shaft j journaled near the front of the frame. The arms j impinge against the under side of the table being normally in an inclined position and as the shaft 7" is turned the table is raised or lowered. The rotation of the shaft is accomplished by means of a cam 70 having an inwardly projecting flange which engages the teeth of a gear j located on the shaft j. The cam is operated by means of a crank k and as the flange turns it turns the gear at the rate of one tooth to each revolution of the cam.

The saws are here shown as two in numher and each is mounted on a carriage 6 carried by a base 6 which slides on V-shaped guides a extending transversely across the machine beneath the table. The carriages are moved from and toward each other by means of a right and left handed screw 9 which engages a nut g on the under side of each car- Specification of Letters Patent. Application filed January 21, 1909.

Patented July 5, 1910. Serial No. 473,538. i

riage. The screw 9 is provided with a bevel gear 9 which engages a bevel pinion at this latter being on a countershaft m turned by a crank m Thus by turning the crank m the two saw carriages may be made to come together or separate. Each of the carriages c has an abutment on each side and between the two abutments is pivoted by means of a pivot e the tilting saw support 6 provided on its lower edge with a segmental gear 6' and on the upper portion with suitable boxes in which are journaled the saw arbor c with a pulley c and saw 6 The two saws are normally mounted on the ends of the arbors nearest each other but for special work one of the arbors is made double so that the saw may be mounted on either end. As shown the saw arbor on the left of Fig. 1 has a double arbor the purpose of which will be hereinafter explained. The segmental saw support is tilted by means of a worm f engaging the gear teeth of the segmental gear, the worm being on a shaft f mounted in the base e of the carriage and it is provided with an operating handle 7. The saws are rotated by means of elongated pulleys h located on a driving shaft h journaled at the rear of the machine and driven by the driving pulley 7L2.

Means are provided by holding and guiding the work which consists largely of strips of wood to be mitered or cut oft" square. For cutting ofi' wood strips, I provide a work support consisting of a support bar (Z extending transversely across the table from one edge to the other and abor e the upper surface. Each end of the bar is connected to a slide 0 held in V-shaped grooves formed in the guides Z) secured to the edges of the table, and the support bar may thus be pushed toward the saws and drawn back by hand. For the purpose of supporting the two ends of the wood strips while running them on the saw, I provide a work holding bracket which may be attached to the support bar at any desired point. For this purpose I secure to the front edge of the bar d an upward projecting flange here shown as a metal strip 03 secured to the bar by screws. The bracket (2 is formed so as to embrace the flange d and is adjustably secured thereto by a set screw 0Z The rear portion of the bracket extends back of and substantially down to the bottom of the bar 03 and it has a work supporting arm cl which extends back and just above pieces secured to the bracket d by means of a' of the table and in'wh'ich is saws.

ner 'as the tilted saw in oppositeends of the strip are to be 'mitered [with parallel cuts thesaw at the left is shii'tedfto the other end of the arbor and.

- cientto keep position. The gage is composed of a body portion p which embraces the guide bar b secured to the front edge of the table and a separated therefrom by a space the gagebethe level of the table. Two of these brack- 1' ets are secured to the flange d and they are so adapted as tosupport the ends of the to be sawed. A suitable gage i is clamp iii and this gage serves as a guide for the ends of the pieces. To keepthe support bar from running onto the saws, 1 providefa stop a which is attached to the edge a slot. for the purpose for adjustment to difl'erent. sized My machine is capable of doing a great variety of'work. Whe'n'one endof the strip is to be squared and one end mitered the saws 'a're arra'nged'as 'in-Fig. 1, the distance apart, of'the saws" :eing regulated b'y turning the crank 9 41i both ends are to be 'mitered with oppositely inclined cuts the saws both tilted back in th ame man- Fi 1. When"the the's'awsup port inclined so as to bring the sa ws. parallel and at the [same height.

Tonnin and broovin can also be done b .3 ,1? p, a means ot the double arbor without change.

This operation is only possible when a doubleia'rbor is used. When the saws are to be used for stripping, the support bar (I is removed anda gage such as is shown in Fig-eis-used.

: Infaddition 'to the common forms of ripping done byfother -machine's are the follow ng.By sing the two saws two strips of I different widths "can be sawed at one movement, one edge straight and the other beveled, or both edges beveled at any angle at .one' movement of the feeding device.

' 'Whnthe w are in a normal or u i ht Po yt rbors are so arranged with re- J lation to'rthecountel" S t that when the saws aretilted the twist in the belt. is suffiit at the same tensionin any ngsecured in place by a set screw.

The machine is thus adapted to do any I signature this12 day "form of cutting off, mitering and stripping,

the adjustments areall quickly and easily made, the machine may be cheaply con- 'structed, and it is well adapted for many kinds of wood working shops.

1. In a sawing machine the combination of a frame, a table thereon, a work support slidably mounted on. said table and composed of a transverse bar, an upright flange 'on said b'arfand extending longitudinally thereof, and a work holding 'bracket embracing said flange and ha ingprojectin'g arms extendin rearward-and above the table and clamping means for clamping the bracket to the flange. I

'2. In a sawing and mitering machine, the combination of a table having a horizontal V-Shaped groove in 'each'ofits lateral edges, guides adapted to slide in said grooves, a bar connecting said guides and extending above the upper surface of the table, an upright flange on said bar extending above saidbar and longitudinally thereof, a work holding bracket having a longitudinal slot adapted to embrace "said flange and having horizontal arms projecting rearward and above and separated from the table and clamping devices for clamping the bracket in place.

v 3. In asaw'ing and mitering machine, the

combination of a table having a horizontal V-shaped-groov'e in each of its lateraledges, guides adapted "to slide in said 'grooyes, a bar connecting said guides and extending above the upper surfaceof the table, an upright flang'eon said bar extending above said barandjlongitudinally thereof, a work holding bracket having a longitudinal slot 

